Malicious PDF — malware analysis report

Static analysis result for SHA-256 de5721d8459e1297…

MALICIOUS

PDF

72.5 KB Created: 2021-02-26 20:11:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: df3cb3bc04de25edd2ea95fc6f59e846 SHA-1: f3e8fc38f35ec17df5084d23ef3729fd3b46b18a SHA-256: de5721d8459e129738802b6cabb02daddef2aefe490b8f166288b7916bb7cc17
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://baarspo.ru/award?keyword=what+is+william+golding%2527s+philosophy+of+human+nature PDF link annotation
    • http://herss.space/682567283519r0y8.pdfIn PDF document text
    • http://xexogafuko.22web.org/alcatel_one_touch_5020t_firmware.pdfIn PDF document text
    • https://jubipolofolexi.weebly.com/uploads/1/3/2/3/132302872/tazaxuxo.pdfIn PDF document text
    • http://logoped-samara.ru/telemecanique_altivar_11_manual_espaolsb6o0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474739/normal_6026f94704da2.pdfIn PDF document text
    • https://vofovolovun.weebly.com/uploads/1/3/1/4/131483423/7996669.pdfIn PDF document text
    • https://cdn.sqhk.co/lipidupi/e9NGPgP/zeruzi.pdfIn PDF document text
    • https://gapurosudezejug.weebly.com/uploads/1/3/5/9/135965954/9d472a42b83e.pdfIn PDF document text
    • http://afracheat6.xyz/car_driver_games_for_pcwgs81.pdfIn PDF document text
    • https://cdn.sqhk.co/janawezexoj/gPypaie/81204808664.pdfIn PDF document text
    • https://pabimoju.weebly.com/uploads/1/3/3/9/133997489/3248969.pdfIn PDF document text
    • http://idealicaufficiale.website/company_of_heroes_2_us_guidek93x5.pdfIn PDF document text
    • http://natorg.fun/hot_lights_cold_steel_free5ocor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378830/normal_60338151bbf39.pdfIn PDF document text
    • http://tukudetu.iblogger.org/quebec_leaf_color_report.pdfIn PDF document text
    • https://cdn.sqhk.co/javukapegami/aielhaY/trackitt_n400_biometrics.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gifiz/hays_legal_salary_guide.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ddb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDB8 5696 bytes
SHA-256: 9ad750c6bff0e5b8398653a333cc8d44a94322ced119b94e78b63d5536bc808c
font_01_sfnt_off0000f116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF116 10420 bytes
SHA-256: 74139f8604f7b2d81c2e7742edc6bdd41b2559c5abc4521376d028f6347436a7